Procter & Gamble’s embattled rookie chairman Durk Jager could use a little divine help from his top marketing man — who’s leaving in a few weeks to join a monastery.

The company’s No. 2 marketing exec, Denis Beausejour, stunned the soap and diaper world two months ago by announcing he’s turning in his limo to become a man of the cloth, starting on April Fool’s Day.

It’s no joke, however, and the departure of the 42-year-old visionary of P&G’s new products and online fortunes has left a big hole in the corporate suite.

And P&G needs more help now than ever.

Beausejour was heading up an initiative for new products at P&G, which hasn’t had a blockbuster since the launch of Pampers in 1961.

But analysts say his abrupt jump to an undisclosed Midwestern monastery hasn’t caused anything like the uproar that Jager has brought down on the company.

Shareholders have revolted, analysts are panning Jager, and the bottom has fallen out of the stock for its worst trading day in more than a century.

Analysts say the blame falls largely on Jager, who’s closing out his first year at the helm with a flunking report card.

“It’s best to get your boat in tip-top shape before taking it out for a race, but he didn’t — and now it’s taking on water,” said Daniel Peris, an analyst at Argus Research.

Citing his ill-fated effort to get into a three-way pharmaceutical merger in January with Warner Lambert and AHP, Peris said: “He’s trying too hard with his megamerger dream and is losing credibility in the process.”

Jager, who worked his way up to the top last January, slashed 15,000 jobs and has tried to recast the 163-year-old company.